Troubleshooting - Toshiba Carrier RAV-SM122BTP-UL Installation Manual

12

Troubleshooting

 Confirmation and check
Check code
Unit number of the
malfunctioning
indoor unit
53-EN
When an error has occurred in the air conditioner,
the check code and the unit number of the indoor
unit appear on the display of the remote control.
* The check code appears only while the unit is
running.
Push the [ MONITOR] button or [ CANCEL]
button to display the check information screen.
While the check information screen appears:
Push the " Contact" [ F1] button to
display the contact number for service.
Push the " Information" [ F2] button
to display the model name and serial number of
the unit.
– 27 –
Error codes and parts to be checked
Wired
Wireless remote controller
remote
Sensor block display of
controller
receiving unit
display
Main defective parts
Operation Timer
Indication Ready Flashing
GR GR OR
No header remote
controller
E01
Remote controller
communication error
Remote controller
E02
transmission error
Indoor unit-remote
E03 controller regular
communication error
Indoor unit-outdoor unit
serial communication
error
E04
IPDU-CDB
communication error
Duplicated indoor
E08
addresses
Duplicated header
E09
remote controllers
CPU-CPU
E10
communication error
Header unit
E18 follower unit regular
communication error
IPDU communication
E31
error
Indoor unit heat
F01 ALT exchanger sensor
(TCJ) error
Indoor unit heat
F02 ALT exchanger sensor (TC)
error
Outdoor unit discharge
F04 ALT
temp. sensor (TD) error
Outdoor unit temp.
F06 ALT
sensor (TE/TS) error
F07 ALT TL sensor error
Outdoor unit outside air
F08 ALT
temp. sensor error
Indoor unit room temp.
F10 ALT
sensor (TA) error
Judging
Parts to be checked / error description
device
Incorrect remote controller setting --- The header
remote controller has not been set (including two
Remote
remote controllers).
controller
No signal can be received from the indoor unit.
System interconnection wires, indoor P.C. board,
Remote
remote controller --- No signal can be sent to the
controller
indoor unit.
Remote controller, network adapter, indoor
Indoor P.C. board --- No data is received from the remote
controller or network adapter.
System interconnection wires, indoor P.C. board,
Indoor outdoor P.C. board --- Serial communication error
between indoor unit and outdoor unit
Indoor address setting error --- The same address
Indoor
as the self-address was detected.
Remote controller address setting error --- Two
remote controllers are set as header in the
Remote
double remote controller control.
controller
(* The header indoor unit stops raising alarm and
follower indoor units continue to operate.)
Indoor P.C. board --- Communication error between
Indoor
main MCU and motor microcomputer MCU
Indoor P.C. board --- Regular communication is
not possible between header and follower indoor
Indoor
units or between twin header (main) and follower
(sub) units.
Outdoor Communication error between IPDU and CDB
Heat exchanger sensor (TCJ), indoor P.C. board ---
Indoor Open-circuit or short-circuit of the heat exchanger
sensor (TCJ) was detected.
Heat exchanger sensor (TC), indoor P.C. board ---
Indoor Open-circuit or short-circuit of the heat exchanger
sensor (TC) was detected.
Outdoor temp. sensor (TD), outdoor P.C. board ---
Outdoor Open-circuit or short-circuit of the discharge temp.
sensor was detected.
Outdoor temp. sensors (TE/TS), outdoor P.C. board
Outdoor --- Open-circuit or short-circuit of the heat
exchanger temp. sensor was detected.
TL sensor may be displaced, disconnected or
Outdoor
short-circuited.
Outdoor temp. sensor (TO), outdoor P.C. board ---
Outdoor Open-circuit or short-circuit of the outdoor air temp.
sensor was detected.
Room temp. sensor (TA), indoor P.C. board ---
Indoor Open-circuit or short-circuit of the room temp.
sensor (TA) was detected.
Air
conditioner
status
*
*
Auto-reset
Auto-reset
Auto-reset
*
Auto-reset
Auto-reset
Entire stop
Auto-reset
Auto-reset
Entire stop
Entire stop
Entire stop
Operation
continued
Auto-reset
54-EN